Creature/NPC Spawner

Keen, if you can please add creature/NPC Spawner. It will expand the scenario editor greatly and made more freedom and flexibility to mapmakers for more interesting scenario and gameplay. Like a deathmatch scenario with added hazard like Sabiroid without resorting to making a map in alien planet.

imagine a scenario with a l4d2 style crescendo event where you enter a base it trips an alarm system with horns blaring,red lights flashing making Sabiroid or wolfs spawn constantly until the player reaches a control room and shuts the alarm off.

would be pretty good.
could have like a block that spawns them and have it out of sight somewhere but have it so they can enter the area from say a vent if a dog or a roof if the Sabiroid

Midspace's Admin Helper Commands is able to spawn wolves and sabiroids so there must be a way to do it through code. I'd like to see more control of the behavior of NPCs as last I checked any creature added could only act like a sabiroid or a wolf.

A spawner with position, collision, proximity and nº of times. It can be a a great tool to create scenarios!
Imagine something only spawning when needed like a subterranean base in a asteroid or planet, it will save a lot of CPU instead load a full world.